* {
  padding: 0;
  margin: 0;
}

body {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

ul {
  position: relative;
  display: flex;
  width: 375px;
  height: 50px;
  font-size: 12px;
  background-color: #eee;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  list-style: none;

}

ul>li {
  width: 25%;
  height: 100%;

}

span.active {
  background-color: rgb(217, 114, 131);
  width: 40px;
  height: 40px;
  line-height: 40px;
  border-radius: 50%;
  text-align: center;
}

span.wrap {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  top: -50%;
  transform: translateX(20px);
  width: 50px;
  height: 50px;
  background-color: #eee;
  border-radius: 50%;
  -webkit-transform: translateX(20px);
  -moz-transform: translateX(20px);
  -ms-transform: translateX(20px);
  -o-transform: translateX(20px);
  transition: transform .3s linear;
  -webkit-transition: transform .3s linear;
  -moz-transition: transform .3s linear;
  -ms-transition: transform .3s linear;
  -o-transition: transform .3s linear;
}

span.wrap::before {
  position: absolute;
  left: -7.5px;
  bottom: 22px;
  content: '';
  background-color: #eee;
  width: 10px;
  height: 13px;
  mask: radial-gradient(circle at 0 0, transparent 0 53.5%, red 55.5% 63.5%, blue 65.5%);
  -webkit-mask: radial-gradient(circle at 0 0, transparent 0 53.5%, red 55.5% 63.5%, blue 65.5%);
}

span.wrap::after {
  position: absolute;
  right: -7.5px;
  bottom: 22px;
  content: '';
  background-color: #eee;
  width: 10px;
  height: 13px;
  mask: radial-gradient(circle at 100% 0, transparent 0 53.5%, red 55.5% 63.5%, blue 65.5%);
  -webkit-mask: radial-gradient(circle at 100% 0, transparent 0 53.5%, red 55.5% 63.5%, blue 65.5%);
}


a,
a:visited {
  width: 100%;
  height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  text-decoration: none;
  color: #000;
}
